| Element | Missed Instructions | Cov. | Missed Branches | Cov. | Missed | Cxty | Missed | Lines | Missed | Methods |
| Total | 29 of 47 | 38% | 1 of 2 | 50% | 6 | 8 | 6 | 12 | 5 | 7 |
| accept(Visitor, Object) | | 0% | n/a | 1 | 1 | 2 | 2 | 1 | 1 | |
| StringOperation(Operator, Expression[]) | | 68% | | 50% | 1 | 2 | 0 | 3 | 0 | 1 |
| getArg(int) | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| getOptArg(int) | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| getOperator() | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| getArgs() | | 0% | n/a | 1 | 1 | 1 | 1 | 1 | 1 | |
| StringOperation(OperationMixin) | | 100% | n/a | 0 | 1 | 0 | 3 | 0 | 1 |